Endometriosis is an inflammatory chronic systemic disease resulting in
pelvic pain and
infertility. However, despite a high prevalence of
endometriosis, disease identification is still insufficient, and a high percentage of misdiagnosing was observed. Hence, a comprehensive study needs to be done to improve our understanding of the pathogenesis of
endometriosis. Aberrant hypermethylation of HOXA10 has been reported to play a role in
endometriosis. Thus, a comprehensive literature search was conducted to identify the DNA methylation level of HOXA10 among
endometriosis patients across populations. The literature search was done using PubMed, Scopus, EBSCOhost, and Science Direct applying (HOXA10 OR "
homeobox A10" OR "HOXA-10" OR HOX1) AND ("DNA methylation" OR methylation) AND (
endometriosis OR
endometrioma) as keywords. From 491 retrieved studies, five original articles investigating the DNA methylation level of HOXA10 from endometrium tissues among
endometriosis women were included. All five included studies were classified as high-quality studies. High HOXA10 DNA methylation level was observed in the endometrium tissue of women with
endometriosis in all the included studies. The secretory phase was identified as the best sampling time for HOXA10 DNA methylation study in
endometriosis, and the most studied DNA methylation site is the promoter region of the HOXA10. However, more studies are needed to expose the HOXA10 mechanism in the pathogenesis of
endometriosis.